The leaves on our two variegated holly bushes look very similar to this. The bottom third of the bushes are healthy, but the leaves on the top two-thirds look just like this. Some of the leaves are completely brown. Do you know what it is and if/how it can be treated? Thank you.
Holly Bush Disease
Certified GKH Gardening Expert
This is Tar Spot on a Holly leaf.
Here is more information about this fungus.